Clock winding mechanism.



E. E. YAX-LEY.

CLOCK WINDING MEGH-ANI M. APPLICATION FILED APR. 2.190s.

92 55, Patented May 25, 1909.

2 SHEETS-SHEET 1.

INVENIUR ERNEST YAXLEY f2 TTOQNE V B. E. YAXLEY.

CLOCK WINDING MECHANISM APPLICATION FILED APR. 2.190s.

Patented May 25, 1909.

2 SHEETS-SHEET 2.

le uunnnunuununrgmu WITNESSES: IN VENTOR I BY ERNEST E'. YAxLEy ERNEST E. YAXLEY, OF CHICAGO, ILLINOIS.

CLOCK WINDING- MECHANISM.

Specification of Letters Patent.

Patented May 25, 1909.

Application filed April 2, 1908. Serial No. 424,760.

To all whom it may concern:

Be it known that I, ERNEST E. YAxLnY, a

citizen of. the United States, residin at Chience-being had to the accompan ing drawin s, forming a part of this spec' cation.

Iy inventionrelates to motors and particularly to that class of motors findin service in the operation of clocks, thoug I do not wish to be limited to the use to which the device of my invention ispu-t.

Specifically, my invention relates to that class of motors in which electro-inagnetic mechanism is employed for the purpose of supplyin the same with motive power.

As is we known by those skilled in the art, the armature of an electro-magnet, in

circuit through the electromagnet when said armature had reached a retracted position, whereupon the armature was attracted, 5

the circuit previously established by the armature being broken before the armature had reached its attracted osition, the momentum of th armature eing relied u on to complete its forward movement. he

armature in .its forward movement, works,

against the force of a power device in the form oi a spring or weight, whereby ener is storedthat'is employed in operating t e motor.

In accordance with one feature of my invention, I maintain the circuit-of the armature closed until it has fully reached its attracted position, whereby momentum is not relied'u on to complete the forwardmorcment 0 the armature. The magnet WOllk'? ing upon its armature and power device throughout the forward movement of the. armature, stores up energy in said device that it may eflect the operation of the motor.

My inventionhas for another of its objects the provision of suitable signal mechanism which may be set intoop'eration when the source of current employed for energizing the magnet fails in its duty of operatively energizing the magnet.

I will explain my invention, more fully by reference to the accompanying drawings,

showing several embodiments thereof, in which Figure 1 is a view in elevation with parts broken away, of a motor adapted to the operation of a clock, and including the a aratus of my invention, one form oisigna ing diagrammatically illustrated in electrical association with the source of current employed for operating the magnet. hi 2 is a sectional plan view on line 2 2 of ig. 1. Fig. 3 isan enlarged view of a portion 0 the structure shown in Figs. 1 and 2. Fig. 4 illustrates so much of a motor mechanism as is necessar to illustrate another embodi- E iIlustrates so much of a motor mechanism this necessary to illustrate another embodiment of a feature of my invention. Fig. 6 illustrates so much of a motor mechanism as is necessary to illustrate still another em- & bodimentoi a feature of my invention.

one class of clocks, has hitherto established 1 Like parts are indicated by similar char- [acters' of reference throughout the diii erent figures. w

The motor mechanism that 1- have illustrated isadapted to the operation of clocks and includes a clock train a in suitable relation with the hands of a clock, all as is well understood by those skilled in the "art. The initial wheel t of the train a is in the form of a ratchet wheel, to which torque is initiall applied for the purpose of operating the ba ance of the train in suitable gear relation with the wheel t. Torque is applied .to the wheel I) by means of an actuating pawl 12, which is, in turn, operated by a spring (1 (Fig.1) or its e uivalent, the weight d (Fig. 4). The paw c is pivoted upon an armature e and ower is effectively I exerted upon the pawl c y the spring (2 or the weight d throu h said armature, it being understood that t is power is effectively exerted durin the time that the magnet f rovided for the armature, is in open circuit. en the armature has completed its nor mal receding movement from its electromagnet, the circuit including the electromagnet and .a suitable source otcurrent, as the battery g, is closed-hetween the contacts l2, and 1', as. will. be resently described, whereby the tension 0 the spri is increased or the weight (1 is liiite for the purpose of renewing the-powerthatis frequired tovoperate the motor. During the attraction of the armature this circuit is maintained closed, as I will now describe in connection with the structure shown in Figs. 1 and 3. To accomplish this result in the embodiment of the invention shown in Figs. 1 and 3, I enablethe holding pawl or detent k to act upon the s ring contact 2' in such a manner that when the actuating pawl.

c has moved the wheel 1) its predetermined arcual distance, referably one tooth, the holding pawl wil dro into engagement with a fresh tooth an permit the spring contact 2' to'engage the contact h by reason of the resiliency of the spring contact 11, the spring contact 11 having been laced under. increased tension by reason of t ied'epression ofthe detent during the movement of the wheel I) the space of one tooth. It will, therefore, be seen that in the embodiment of the invention shown in Figs. 1 and 3, the contact '5 practically travels with the detent 7c, so that when said detent engages a new tooth, it closes circuit through the magnet;

In order to 0 en the circuit, the spring h is lifted, which ifting o eration takes place when the armature ehas een fully attracted, it being understood that when the armature is fully'attracted, the actuating pawl c has engaged a fresh tooth, the W1, when dro ping into engagement with a fresh toot permitting an agency to effect the elevation of the contact h, which agency is desirably in the form of an adjustable spring lthat is sufficiently strong to overcome the tension of the spring b, said s ring I preferablyacting upon the spring and a roller post m, constituting a cam element, carried upon said pawl, the spring h having its end suitably upturned for engagement with said post, whereby the pawl mechanism has cam engagement with said ip'r ing h. The u turned end of the spring i that engages t e post m is so related to the surface of the tooth over which the nose of the pawl c rides, that during the time that the nose of said awl is riding over said tooth surface the saicf tooth surface revents the spring Z from hav' operative ifting action upon the upturne end of the spring 71,, though during this movement the post m desirabl does not leave the spring it.

When t e pawl has left the tooth surface the magnet f t through the pawl 0.

which it has ridden and has dropped into fresh tooth engagement. After the pawl has newly en aged a tooth, the circuit of lien being open, the power de vice d or (1% acts through the armature e to move the awlc in a direction opposite to :that in whic it previously moved, whereby turning effort is applied to the initial wheel I) by the power device (1 or d} to operate the motor train. At this point it should be stated that Figs. 1, 3, 4 and 6 show the parts 1 in the position-they occupy. just after the magnet circuit is closed and just before the armature is started toward itsmagnet, the wheel I) not yet having been actuated by the pawl c and the power device (1 or d.

It should be understood in connection with Fig. 5 that the armature is almost fully retracted preparatory to a fresh closure of the ma et circuit.

' he detent k operates to prevent the wheel I) from turning in a direction opposite to that whichit follows through the agency of the pawlnc during the time that the pawl c is ridmg over a tooth, the detent 7c freshly engaging a tooth when the pawl c has turned the wheel I) a step; Dunn the time'that the pawl c -is turning the rides over a tooth surface preparatoryjto a fresh tooth en a ement, during which riding action of said etent the contact i is depressed, the contact spring It being inherently adapted to follow the spring 71 in its downward movement but being prevented from engaging the same, b reason of the engagement of the contact with the roller m. It

is desirable to preserve an approximately w ich the detent 7c is riding. When the detent Ic has escaped. the tooth surface over which it has ridden and drops into fresh tooth engagement, the spring 71, by reasonof its own resilienc 'makes contact with the wheel I), the. detent k spring h, it being understood that the detent I k is mounted' upon the spring 11 and is free of direct mechanical engagement with the spring It.

When the circuit of the electro-magnet is o ened, thecontact terminal 75 is stationary;

e contact i is preferably made movable, as has been described, inorder to simpl' the construction, for in the embodiment s own in Figs. 1 and 3, the contacts h and i may be moved relatively very quickly both in opening the circuit and in closin the circuit, a single pair of contacts. only being required. However, features .of my invention may be practiced, as shown in Fig. 5, where one pair of contacts h i is emploiyed for opening the 'magnet circuit and anot er pair of contacts h 1, is employed for closing the circuit, the" contacts 0 each pair being adapted for quick relative movement, in performing their functions, the contact 11 also performing the function of the detent 7;. Features of my invention may also be practiced as shown in Fi 6, where a single pair of contacts h i is employed adapted for quick relative motion in opening the magnet circuit and slow relative motion in closing the circuit.

The motor of my invention may be employed to cause the o eration of other motors in synchronism, con uctors n (Fig. 1) being illustrated in parallel connection with the conductors leading to the contacts h and i and in circuit with magnets that may have an office similar to that of the magnet lit may be desired to prolong the movement of attraction of the armature for the purpose of increasing the duration of the engagiement of the contacts h and i, to which en i provide a retarding device to delay the attraction of the armature, one form of such retarding device being illustrated in Fig. i in the form of a fan 0. it may be particu larly desirable to supply a retarding device when there are motor magnets connected with the energizing circuit, as is suggested by the wires n in Fig. l.

Referring to Fig.1, lhave illustrated a self-soldering heat coil such as are com. monly found in the mar et, which normally holds a spring q under tension, said spring carrying a signal tar et 7, though I do not wish to be limited to t e form of signal nor to a visual signal. The heat coil g; is in serial relation with the battery g. l; t should become suflic-iently spent to prevent it from operatively energizing the magnet f, the contacts h and i will remain closed. The current from the battery, though reduced, will be sufficient by reason of the long duration of its flow, to melt the solder of heat coil p in circuit therewith, whereupon the spring q will be released, so that the signal target 1 will be presented before an 0 ening r, whereby the observer will be in ormed that the battery needs replenishment, it bein understood that when the battery is rep enished the spring is reset into the position shown to reestablish the battery circuit previously opened by the release of spring q and to concc'al the signal.

In Fig, 4 I have shown a signal target a, which is not within the influence of the armature when the armature moves throughout its normal range, but which is lifted by the armature when said armature is retracted by the power device be ond its normal range of movement upon diminution or cessation of the energizing current, whereupon the target a is presented before an openmg 1, thereby indicating to the observer that the battery needs replenishment or that the source of current is not in proper relation with the electro-magn ctic mechanism.

I While the signsl dcvice is shown in assohe battery ciation with the improved motor mechanism of my invention, i do not wish to be limited to such association.

The extent to which the armature may recede is regulahle by the adjustable back stop a, so that the armature cannot he removed from the range of its magnet.

It is obvious that changes may readily be made in the device of my invention herein shown and particularly described without departing from the spirit thereof, and l do not, therefore, wish to be limited thereto, hut

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent the following 1. Motor mechanism including a toothed wheel, awl mechanism including a pawl adapted for engagement with the toothed wheel to turn the same, a power device operating upon and through the pawl to eiiect turning movement of the wheel, an elec taro-magnet serving, when energized, to operate upon the pawl mechanism to cause the pawl thereof to have fresh tooth engagernent, and upon the power device to replenish power mechanism governed by the pawl mechanism and permitted to close circuit through the electro-magnet when the pawl has caused predetermined movement of the wheel, said pawl mechanism operating the switching mechanism to open circuit throu h the electro-magnet when the pawl has resh tooth engagement, the pawl mechanism being out of operating relation with the switchingmechanism during movement of the awl to the position where it may have fres tooth engagement, whereby circuit through the electro-magnet is maintained during such movement of the pawl.

2. Motor mechanism including a toothed wheel, lpawl mechanism includlnga pawl adaptei for engagement with the toothed wheel to turn the same, a power device 0 erating upon and through the pawl to e ect turning movement of the wheel, an electromagnet serving, when energized, to operate upon the pawl mechanism to cause the pawl thereof to have fresh tooth engagement and upon the power. device to replenish power therein, a detent caused to have fresh-tooth engagement with said wheel when the wheel has been moved a predetermined distance by the power device acting through the pawl mechanism, and switchins mechanism governed by said detent and pawl mechanism and operated by the detent when said detent has fresh tooth engagement to close circuit through said electro-magnet and operated-by the )awl mechanism when the pawl thereof has shtooth engagement to open circuit through the electro-magnet, the owl mechanism being out of operating re ation with the switching mechanism during movement of the pawl to the position where it may have mechanism to cause t 1e pawl fresh tooth engagement, whereby circuit through the elec'tro-magnet is maintained during such movement of the pawl.

3. Motor mechanismincluding a toothed wheel, )iLVVl mechanism including a pawl adapted for engagement ivitlrthe toothed wheel to turnthe same, a power dcviceoperating upon and through the pawl to effect turning movement of the wheel, an electromagnet serving to operate 1.1)011 the )awl mechanism to cause the pawl thereof to have fresh tooth engagement and upon the power device to replenish power therein, and switch ing mechanism having a part en aged by the pawl of the pawl mechanism a apted to be moved by the awl mechanism to close circuit through t e electro-ma net when the pawl of the pawl mechanism as fresh tooth engagement, the lace of contact of the awl with the engage portion of the switc ring mechanism moving in a plane substantially parallel with the surface of the tooth over which the pawl moves when being actuated b the electro-magnet, whereby said portion oi the switching mechanism is not operated until the awl has fresh tooth enga ement and the e ectro-magnet is maintaine energized during the movement of the pawl to the position where it may have fresh tooth engagement.

4. Motor mechanism including a toothed wheel, pawl mechanism including a pawl adapted for engagement with the toothed wheel to turn'the same, a power device 0 erating upon. and through the pawl to s set turning movement of the wheel, an electromagnet serving to o erateupon the awl t ereof to rave fresh tooth engagement and upon the )ower device to replenish power therein, a etent caused to have fresh tooth engagement with said wheel when the wheel has been moved a predetermined distance b the ower device actin through the paw mec anism, and switc iin mechanism operated u on b the detent w lien said detent has fres i toot 1 engagement to close circuit throu b said electro-magnet, said switching mec anismhaving a part engaged by the pawl of the pawl mechanism adapted to be moved by the pawl mechanism to close circuit through the electro-magnet when the pawl of the pawl mechanism has fresh tooth en agenient, the place of contact of the pawl wit the engaged ortion of the switching mechanism moving in a plane substantially arallel with the surface, of the tooth over w ich the pawl moves when being actuated bv the electiornagnet, whereby said portion oi the switching mechanism is not operated until the pawl has fresh tooth engagement and the electro-magnet is maintained energized durirn themovemerit of the pawl to the position where it may 1 have fresh tooth engagement.

5. Motor mechanism-including a toothed wheel, awl mechanism including a pawl adaptei for engagement with the toothed wheel to turn the same, a power device 0 )erating upon and through the pawl to e ect turning movement of the wheel, an electromagnet serving, when energized, to operate upon the pawl mechanism to cause the pawl thereof to have fresh tooth engagement, and u on the power device to replenish power t erein, and switching mechanism governed b the pawl mechanism and permitted to cl se circuit through the electro-magnet when the pawl has caused predetermined movement of the wheel, said pawl mechanism operating the switching mechanism to 0 m1 circuit through the electro-magnet w ien the pawl has fresh tooth engagement, the pawl mechanism being out of operating relation with the switching mechanism during movement of the awl to the position where it may have fres tooth engagement, whereby circuit through the electro-magnet is maintained during such movement of the pawl, the pawl mechanism being out of actuating relation with the switchingmechanism during the time the power device is operating upon the pawl mechanism, to avoid additional loat upon the ower device as said power device causes t e movement of the wheel.

6.'l\'lotor mechanism including a toothed wheel, awl mechanism including a pawl adapted for engagement with the toothed wheel toturn the same, a power device 0 er ating upon and through the pawl to e ect turning movement'of the wheel, an electromagnet serving, when energized, to operate u on the pawl mechanism to cause the pawl ereof to have fresh tooth engagement and upon the power device to replenish'power therein, a detent caused to have fresh tooth engagement with. said wheel when the wheel has been moved a predetermined distance by the )ower device acting through the pawl mec ianism, and switching mechanism governed by said detent and pawl mechanism and operated by the detentwhen said detent has fresh tooth engagement to close circuit through said electro-ma net and operated by the pawl mechanism when the pawl thereof has fresh tooth engagement to open circuit through the electro-magnen the )awl mechanism' being out of operating re Mice with the switching mechanism during movement of the pawl to the position where it may have fresh tooth engagement, whereby circuit through the electro-magnet is maintained during such movement of the pawl, the pawl mechanism being out of actuating relation with the switching mechanism during-the time the power device is operating upon the pawl mechanism, toavoid additional load upon the power device as said power device causes the movement of the wheel.

7. Ann apparatus of the class described in eluding an electro-magnet, a power device in which energy is stored by the electromagnet when energized, pa'wl mechanism operable by said power device to enable the transmission of )ower therefrom to perform work, a toothed wheel acted upon by said pawl mechanism, a switching device for closin circuit through the electro-magnet, where energy in the power device may be replenished, said switching device including a detent adapted for tooth engagement with said wheel, and acting, when brought into fresh tooth engagement, to occasion the closure of said circuit, and a switching device for excluding the electro-magnet from circuit and operated by the pawl mechanism when the pawl of the-pawl mechanism drops to engage a fresh tooth, said switching devices including a contact s ring common thereto, the contact governe by the detent being also in the form of a spring and moved by the detent as the detent rides over a tooth, the common contact spring possessing resiliency that enables it to follow its companion contact spring but prevented from moving into engagement with said .companion contact spring by the pawl mechanism, whereby the two contact springs are in close relation when the detent has dropped to engage a fresh tooth, whereby engagement between said contact springs is quic ly effected when said detent drops to engage a fresh tooth.

8. An apparatus of the class described including an electro-magnet, a power device in which energy is stored by the electromagnet when energized, pawl mechanism operable'by said power device to enable the transmission of power therefrom. to )erform work, a toothed wheel acted upon y said pawl mechanism, a switching device for closin circuit through the electro-magnet, where by energy in the power device may be replenished, said switching device including a detent adapted for tooth engagement with said wheel, and acting, when brought into fresh tooth engagement, to occasion the closure of said circuit, and a switching device for excluding the electro-magnet from circuit and operated by the pawl mechanism when the pawl of the pawl mechanism-drops to engage a fresh tooth, said switching devices including a contact s ring common thereto, the contact governei by the detent being also in the form of a spring and-moved by the detent as the, detent rides over a tooth, the common contact spring possessing resiliency that enables it to follow its companion contact spring but prevented from moving into engagement with said comwhen the power panion contact spring by the pawl mechanisnuwhereby the two contact springs are in close relation when the detent drops to engage a fresh tooth, whereby engagement between said contact s )rings is quickly effected when said detent drops to engage a fresh tooth, the common contact spring .and the pawl mechanism having cam engagement ermitting the common contact spring to Follow its companion and effecting the removal of said common contact s iring from its companion when the pawl of the pawl mechanism has dropped to engage a fresh tooth.

9 An apparatus of the class described including an electro-magnet, an operating circuit therefor, a power device in which energy is stored by the armature of the electro-magnet when attracted, mechanism operable by said power device to enable the transmission of power therefrom to perform work, switching mechanism for excluding the electro-magnet from circuit "and operable when the power device has transmitted energy replenished therein by the electromagnet to close circuit through the electromagnet, whereby energyin the power device may again be replenished, and signal mechanism whose operation is controlled by the electro-magnet and which operation is permitted by the electro-magnet-only when the electro-magnet fails to respond to that operation ofthe switching mechanism normally adapted to include the electro-magnet in circuit.

- 10. An apparatus of the class described including an electro-magnet, an operating circuit therefor, a power device in which energy is stored by the armature of the electro-magnet when attracted, mechanism operable by said power device to enable the transmission of power therefrom to perform work, said mechanism including said armature, switching mechanism for excluding the electro-magnet from circuit and operable device has transmitted energy replenished therein by the electromagnet to close circuit through the electro magnet, whereby energy in the power device may again be replenis led, and signal mechanism whose operation is effected by the armature'of the electro-magnet when said armature is retracted beyond its normal range by the power device.

. In witness whereof, I hereunto subscribe my name this 28th day of March A. 1)., 1903.

ERNEST E. YAXLEY. Witnesses:

W. H. TRIMM G. O. FRIOKE. 

